Aeroplane



23, E199 w. E. mmmsz Sm 4 Lima ABRQPLANE Filed April 16' 1929 PatentedJuly 23, i929.

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ROMAN B. manrsznwsxr, or MILWAUKEE, wisconsin.

AEROPLANE.

Application led April 16,

' minimizes the air resistance and which reduces the number of props orstruts, or wires required for the wings of aeroplanes.

Furtherobjects of this invention are to` provide a wing bracingconstruction which provides additional strength for the portions of thewing, and which is so made that a single prop or strut may be employedfor each wing and may be secured to the wing along the line throughthecenter of lift of the wing.

A further object is to provide a novel form of aeroplane construction,in which the vision of the occupants is not obstructed by the props orstruts for supporting the wings. g

Further objects are I to provide an aeroplane construction which willsecurely brace the wing in a novel and highly efficacious manner, andwhich is relatively simple, is of light weight, and may be easilyapplied.

An embodiment of the invention is shown in the accompanying drawings inwhich:

Figure l is a plan View of the portion of an aeroplane with parts brokenawayshowing the bracing in place;

Figure 2 is a sectional view on the line 2-2 of Figure 1. v

Referring to the drawings, it will -bc seen that a monoplane has beenchosen for illustration. The fuselage has been indicated by thereference character 1 and one of the wings by the reference character 2.These wings are provided with a forward beam 3 and a.

rear beam 4. They are also equipped with a forward strip 5 and arearstrip 6, although the beams 3 and 4 take the major strain of thewing. Although the cross bracing transversely of the wing has beenomitted from the drawing for the sake of clearness, it is to beunderstood that this cross bracing is employed in the usual manner. v

These wings are ordinarily braced from the fuselage merely by two lowerstruts. tfhese struts, however, 'do not offer any resist- 1928. SerialNo. $270,360.`

ance to forwardly or rearwardly directed thrust exerted upon the wing. l

In order to take care-of the forward and rearward thrust, a diagonalbracing member 7 extends from lthe rear portion of the fuselagelto eachof the wings. The diagonal bracing member 7 may be secured to thefuselage in any suitable manner, as by means of the socket bearing 8,shown in Flgures l and 2. This bracing may be of Wood, metal, or othersuitable material. It extends, as is apparent from Figure 2, across therear beam 4 and beneath the forward vbeam 3. It is secured to each ofthese beams in a rigid manner. An auxiliary brace 9 crossesthe mainbrace 7 and is secured to the upper side of the rear beam 4 and thelower side of the forward beam 3. These braces'are arranged to cross atthe centerline of lift and a single strut or prop 10 extends from thelower portion of the fuselage to this point of crossing and is securedto these braces at their point of crossing.

Thus, a single strut or prop is employed and rearward or forwardpressure and also maintains the angle of incidence unvarying. rfheaddition of the auxiliary brace 9 produces the effect as if the mainbrace 7 were attached at more than two points to the forward andrearward beams 3 and 4, and thus increases materially the rigidity ofthe structure. The cross braces also aid in preventing lateraldistortion of the wing.

It is to be noted, also, that the main brace 7 when positioned as shown,together With the prop 10, permits a wing bracing that offers less airresistance in comparison with other external types of wing bracing.

It is to be understood that although the brace has been shown asextending rearwardly, it may extend forwardly under cer tainconditions,.and that although the strut or prop 10 has been shown asextending downwardly, it may extend upwardly under certain conditions.

Although the invention has been described in considerable detail, suchdescription is in tended as illustrative rather than limiting as theinvention maybe variously embodied f I claim:

1. An aeroplane comprising a fuselage wings projecting therefrom,diagonal braces extending from a rear portion of the fuselage forwardlyand outwardly and attached to the Wings, and a strut extending upwardlyfrom the lower portion of the fuselage beneath the wing to each of thediagonal braces.

2. An aeroplane comprising a fuselage, a pair of wings projectingtherefrom, a main diagonal brace for each of said wings, said braceextendin from a rear portion of the fuselage into te win and -forming adiag- Ona-l thrust receiving race to reenforce the wing against lateralthrust either directly forwardly or rearwardly, and an auxiliarydiagonal brace secured to said first mentioned diagonal brace andextending transversely thereto and attached to the win 8. An aeroplanecomprising a uselage-having a pair of outwardly projecting wings,each-of said wings being provided. with a front and a rear beam, adiagonal main brace lfor each of said wings, said diagonal brace einvfuselage behind the wing and extending across the forward and rear beamsand secured thereto, and a strut extending upsecured adjacent a rearIportion of: thean' auxiliary diagonal brace extending across the frontand rear beams and terminating adjacent said beams and secured to saidmain diagonal brace, and a strut extending upwardly from the fuselagebeneath the winfr and secured to said braces at their point o crossing.,

5. An aeroplane comprising a fuselage, a. pair of outwardly projectingwings, each of said wings having a forwardbeam and a rear- Ward beam, adiagonal main brace for each` of said wings secured to a rear portlonofthe fuselage and. extending overl the rear beamyk and beneath theforward beam and attached?- the county of Milwaukee and State: ofWiscousin.

B. MALISZEWSKI.

